[Q] Digitizer/touchscreen and proximity sensor problems ! - LG Optimus Black

hi guys,
recently my black got broken and i buy a replacement digitizer on ebay
but ever since then the soft keys, dont work, i tried to reassemble it flash different kernel and roms, flash kdz from stock, nothing worked, so i match the old digitizer to the new one and i think they are diferent, maybe a drivers/modules problem? idk its really strange cause the rest of the touchscreen works remarcably well, and the other problem is the proximity sensor it doesnt work, when i test it via 3845*#970# its said fail, and i cant calibrate it, ive tried to make pressure like i saw a youtube video, nothing worked,
Hope someone can help me
thanks

Related

I think i fooked my phone...

After replacing my touchscreen the phone wont boot, gets to the second splash and restarts. I have tried everythiong i can think of, MTTY, reflash, flash to 2k3 etc. anyone got any ideas?
Many thanks
(and yes i was using static band etc)
Yo bra
just curious did you try the old screen back in again of course as well and test?
i replaced it cause it's broken (i didnt replace the LCD, just the toucher digitiser thingy)
woohoo! it's stopped resetting, but the touchscreen still doesnt work (at least no crack this time )
Maybe touchscreen is not really compatible with the device?
There is also another posibility I don't want to share with U.... (bad one... rly bad)
the touchscreen is the right one (Sony not Toppolly), but i have no idea why it doesn't work. Tbh i'm just gonna give up and buy myself a G-smart.

Touchscreen do not work anymore... but why?

Hello guys,
I have a big problem! My Diamond do not work anymore. I have used a rom for some weeks and by now, the touchscreen doesen't work. But why? Today, I was wondering, that the TouchFlow 3D got problems. When I use the touchscreen, I couldn't use the touchflow. Everytime, it scrolls the clock down and up (like using the sense). the only way was to use the hard buttons.
Then I decided to make a hard reset. and now, its not possible to get through the touch calibration screen. nothing will happen. what can i do?
please help me!
Have you tried another rom ?
I am experiencing the same problem with my diamond!
and I have read in another thread that it could be due to malfunction of the digitizer installed on top of the lcd screen
http://forum.xda-developers.com/showthread.php?t=411386
I have tried flashing with another rom, but still no luck
so I have decided to order a brand new LCD+digitizer kit from ebay and try to get this fixed my own
wish me good luck
here is the link the the ebay page
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=170398900029&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en

G1(Dream) Touchscreen HELP!!

I was flashing a rom the other day (that i had flashed in the past and worked fine) and then i noticed that the touchscreen did not work. (everything else worked)
i flashed back to the cyanogen rom and my touchscreen still did not work.
(when i say my touchscreen doesnt work i mean that i cant touch anything, not even the android to set up my phone)
the trackball works but i am FORCED to touch the android and i cant
ive been flashing and still no luck, any ideas on what happened to my touchscreen or any ideas on how to fix it?
please help!!
I've seen a few of the threads. More than likely your touch screen has died (hardware issue - not software) and I'm not sure if that's replaceable.
Ask a technision :/ like the guy above said its proble the tS died may need replacement or ribbon isnt connected rite .
So whats my best bet in going about this?
i dont know what to do :/
if you feel like your able to take apart the phone and replace the screen, you could always try it. either that or buy a new phone or possibly a cell phone repair shop if you even have one.
i decided to kinda drop it.
it works now...
thanks for your help anyways guys!
D:
I wouldn't be DROPPING it to fix it...
Problem is probably a badly seated ribbon cable, which means it is STILL not well seated and will probably happen again.
Look in the screen hinge as you're sliding the screen open -- see the little ribbons in there? Probably got yanked a little.

[Q] Help me solve keyboard mystery please!

So here is my story.. i have a perfectly working kaiser, and one with a broken lcd.. but both of them are in terrible cosmetic condition.. so i decide to order from ebay a full housing (with keyboard included) to make it look good and give it to my brother as a present..
I perfectly disassemble the device with the working screen and easily install it in the new housing.. but when i turn it on i realise that the only working hardware keyboard buttons were q e u o f h l and some arrows i think...
My first conclusion was that the keyboard included in the housing was not working correctly so i decide to use my old one. but to my surprise the old keyboard also has only the same working buttons!!!
after that i also tried the keyboard from my other kaiser ( with the broken screen) with the same results.
So up to this point, i guess it is safe to assume that the keyboards have no problem.. but then the mystery grows cause i exchanged every single piece of the phone with the broken kaiser's parts and the problem remains the same...
Any idea?? i am an engineer and problems like that that i cannot think of a reason that they are happening drive me nuts!!! please help me sleep at nights..
thanx in advance!
Hooray! Someone else who has the exact same problem as me! The phone I have had the LCD screen replaced and once it was reassembled, the keyboard is wacky. I tried reseating it and the same keys you mention are the only ones working: Q E U O F H L, CAP/Shift, Tab, Space, Enter and the 4 arrow keys. Nothing else works. I'd love to see if anyone has a solution to our problem. =)
Also, I'm not sure if it does it for you but the backlighting doesn't turn back on once it goes off - even when pressing the working keys. I found other posts on this forum with similar problems (with no replies) but their keyboards were not working at all. There has to be a simple solution that we're missing if it's this common.
Thats really weird that we have the same keys working... it really has to be something we are missing... but i have changed everything..
the only thing i didnt change is the lcd, so now that you are telling me that this happened only after you changed the lcd, it got me thinking that maybe the lcd is not as inocent as it may seem... cause,ok, my first thought was like wtf the lcd couldnt mess up with the keyboard.. but now that i think about it it is the only thing i havent tried to replace.. i have a broken one but still quite operative, so i will try with this one and get back at you.. if in the meanwhile anyone else knows something or has an idea, please help a little bit!
Like you, I cannot find any reason between the keyboard and the screen that would cause this. They're not connected in any way or share any cables. They connect to different parts of the main board... there's no logic that I can find.
I got mine second-hand and the original owner said she had the LCD replaced because of a couple dead pixels. The keyboard was working fine before that. Let me know what you find out. I was planning on ordering a replacement keyboard assembly from eBay but since you've tried a couple, that saves me from wasting that money.
Unfortunatelly the extra LCD i had was not operating at all, so the test i wanted to do failed, and i still dont know whats causing the problem... i am more or less convinced that i have to buy a new lcd but it is a bit of a risk to change the screen because some buttons on the keyboard dont work, dont you think?? anyway i am wondering y nobody else has nothing to say... this hasnt happened to anyone else??
ilias_alk said:
Unfortunatelly the extra LCD i had was not operating at all, so the test i wanted to do failed, and i still dont know whats causing the problem... i am more or less convinced that i have to buy a new lcd but it is a bit of a risk to change the screen because some buttons on the keyboard dont work, dont you think?? anyway i am wondering y nobody else has nothing to say... this hasnt happened to anyone else??
Click to expand...
Click to collapse
Hey, why do not you try endkey replacement, you can read and download it at http://forum.xda-developers.com/showthread.php?t=704631
Hakim Rahman said:
Hey, why do not you try endkey replacement, you can read and download it at http://forum.xda-developers.com/showthread.php?t=704631
Click to expand...
Click to collapse
thank you for your reply! but i don't understand how this would help for our problems..
i talked with htc yesterday and they told me it couldnt be the lcd, but during the lcd replacement probably the flexiboard was a little torned (needs a microscope to be verified..) i am giving it for a free test on monday so i guess i l have a more detailed answer soon!!
ilias_alk said:
thank you for your reply! but i don't understand how this would help for our problems..
i talked with htc yesterday and they told me it couldnt be the lcd, but during the lcd replacement probably the flexiboard was a little torned (needs a microscope to be verified..) i am giving it for a free test on monday so i guess i l have a more detailed answer soon!!
Click to expand...
Click to collapse
Hmm, that's an interesting find. It's odd that the same problem exists on different phones, unless it's a common section/piece of the board/assembly that gets damaged. Are you going to try and use the assembly from your other phone? Let me know what happens. I'd like to know what piece I need to buy to get mine working again. =)

[Q] Diamond touch display doesnt respond anymore(after replacing LCD and touch panel)

Hello everyone.....i have recently changed my broken LCD and touch display on my phone and everything on the phone works good except the touch function.
I have checked the solderings between the LCD and touch panel and everything is ok,i have also checked the connections and they seem to be good and the display itself works with light and "pictures" or what we should call it.
Before i reinstalled the software i could use the buttons and navigation button underneath the touch display and power button/volume buttons also worked and i could even recieve a phonecall with it.
I checked so the tilt function also worked and the wifi etc.etc as i said EVERYTHING works like a charm except the touch display.
Have anyone else had exactly this problem with their phone after replacing the LCD and touch panel?
I have checked all the connections inside the phone atleast 3times now and i´m getting abit tired of disassembling the phone just to see that everything is in it´s right place.I have tried with different roms from HTC:s website also without any positive results.
I searched the forum for exactly this problem but couldn´t find anything similiar to this to get the touch to work so i´m sorry if it´s already "out there" and sorry for my "laggy" english but i´m from sweden so i hope you´ll understand.
Ok guys don´t bother....i managed to fix it on my own anyways!
Grattis! What was the root cause and your solution, eventually?
Yeah sorry i forgot to also tell the actual problem.
Well tho everything looked ok,the problem were caused by a incompatible digitizer and screen cause i got them from 2 different places and they simply didn´t matched up together as one unit.I just bought a new lcd so i can have the old one as spare cause the lcd screen worked fine but not the touch digitizer and i also bought a touch digitizer from the same company.What i have been noticed looking around on "the web" after i got this "problem" was that there is alot of different versions models and i probably got unlucky and got myself a mismatch.
On the other hand the lcd and touch digitizer was like 30bucks(338SKR) on a swedish site called "Teknikproffset" so it was well worth the money to just order new "proper" things that matched up.
Hope this answer your wonders and if it´s something else you wanna know,just ask
Hade göttans.
I see. Tack foer svara!

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